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Method of reducing the effects of a delay mismatch variation in a linearisation loop

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3 Author(s)
Sanggee Kang ; Adv. Radio Technique Dept., Electron. & Telecommun. Res. Inst., Taejun, South Korea ; Himin Lee ; Sungyong Hong

The effects of a delay variation in a linearisation loop on the linearisation performance of the loop is studied, especially when the loop uses a one-pilot control method. A delay variation in a linearisation loop caused by ageing and environmental changes is inevitable and unadjustable. Therefore, a two-pilot control method and a control algorithm having stable and fast convergence characteristics are proposed to minimise the deterioration of the linearisation performance due to a delay variation. The experimental results of the proposed control method and algorithm are presented. The ability to reduce the performance degradation caused by a delay variation in the linearisation loop is also demonstrated.

Published in:

IEE Proceedings - Microwaves, Antennas and Propagation  (Volume:151 ,  Issue: 5 )